While investigating a deadly water-borne epidemic along the Nile River, Dirk Pitt (Matthew McConaughey) uncovers a secret dating back to Lincoln's assassination and battles an evil industrialist bent on killing every living thing in the world's oceans. Steve Zahn and Penelope Cruz co-star in this exotic action-adventure based on Clive Cussler's best-selling novels, which routinely set the daring adventurer on a mission to save the world.